UCC28711D

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Texas Instruments

CONSTANT-VOLTAGE, CONSTANT-CURRENT PWM WITH PSR, VALLEY SWITCHING, NTC OPTION, AND 0-MV CABLE COMP.

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UCC28711D

Active

Texas Instruments

CONSTANT-VOLTAGE, CONSTANT-CURRENT PWM WITH PSR, VALLEY SWITCHING, NTC OPTION, AND 0-MV CABLE COMP.

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Description Specifications Series Pricing CAD Documents

Description

General part information

UCC28711 Series

The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

Technical Specifications

Parameters and characteristics for this part

Specification	UCC28711D

Fault Protection	Current Limiting, Over Voltage
Frequency - Switching (Max)	100 kHz
Frequency - Switching (Min)	680 Hz
Internal Switch(s)	No
Mounting Type	Surface Mount
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Isolation	Isolated
Package Features	7 Leads
Package Length	0.154 in
Package Name	7-SOIC, 8-SOIC
Package Width	3.9 mm
Topology	Flyback
Voltage - Start Up	21 V
Voltage - Supply (Vcc/Vdd) Maximum	35 V
Voltage - Supply (Vcc/Vdd) Minimum	9 V

UCC28711 Series

Part	Operating Temperature (Max)	Operating Temperature (Min)	Package Name	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Package Length	Package Features	Package Width	Frequency - Switching (Min)	Frequency - Switching (Max)	Internal Switch(s)	Mounting Type	Fault Protection	Output Isolation	Voltage - Start Up	Topology	Supplied Contents	Board Type	Total Output Count	Output Type	Isolated Output Count	Power - Output	Frequency - Switching	Utilized IC / Part	Voltage - Input (AC) Maximum	Voltage - Input (AC) Minimum	Contents	Current - Output	Regulator Topology	Voltage - Output	Main Purpose
Texas Instruments UCC28711D	125 °C	-40 °C	7-SOIC 8-SOIC	9 V	35 V	0.154 in	7 Leads	3.9 mm	680 Hz	100 kHz	No	Surface Mount	Current Limiting Over Voltage	Isolated	21 V	Flyback
Texas Instruments UCC28711EVM-160																	Board(s)	Fully Populated	1	Isolated	1	5 W	100 kHz	UCC28711	240 VAC	100 VAC	Board	1 A	Flyback	5 VDC	AC/DC Primary Side
Texas Instruments UCC28711DR	125 °C	-40 °C	7-SOIC 8-SOIC	9 V	35 V	0.154 in	7 Leads	3.9 mm	680 Hz	100 kHz	No	Surface Mount	Current Limiting Over Voltage	Isolated	21 V	Flyback

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Troubleshooting TI PSR controllers

Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips

UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C)

Current Sense Amplifiers (Rev. E)

Using the UCC28711EVM-160

Power Management Guide 2018 (Rev. R)

Minimize Standby Consumption for UCC287XX Family